Dru Kamara K16 User manual

CONVERTING TO PROPANE GB/IE
KAMARA
7KW / 12KW / 16KW
Please retain this document carefully
957.629.00
DRU VERWARMING B.V.
HOLLAND

English
CONTENTS
Preface ..........................................................................................2
1. Introduction ......................................................................2
2. CE declaration ..................................................................2
3. Safety ..................................................................................2
4. Converting to propane ..................................................2
4.1 Add G31 type plate ........................................................3
5. Final check..........................................................................3
5.1 Gastightness ......................................................................3
5.2 Gas pressure / supply-pressure ....................................3
Appendix 1 Relations between restriction, discharge
system construction and type of gas ............4
Appendix 2 Technical data ....................................................5
Kamara
CONTENTS
1

Preface
Please carefully read and use this installation
manual.
The following symbols are used in the manual to indicate
important information:
• Work to be performed
!Tip Suggestions and recommendations
!Caution You will need these instructions to
prevent problems that might occur during
installation and/or use.
Caution You need these instructions to
prevent fire, personal injury or
other serious damages.
1. Introduction
When supplied, the appliance is set for the use of natural
gas (G20).This set makes it able to convert the appliance
to the use of propane (G31).
2. CE declaration
DRU verwarming BV declares that appliances
(as mentioned on the cover of this instruction) that are
converted in accordance with this instruction, meet the
European directive for gasappliances 90/396EEC
Product: gas heating appliance with forced convection
air flow
Type: Kamara
3. Safety
Caution - Carefully read this chapter on safety,
before you start performing installation
or maintenance work;
- Please observe the general regulations
and the precautions/safety instructions in
this manual.
4. Converting to propane
The appliance can be converted to use of propane.
For this, the injector has to be replaced and
the burner pressure has to be adjusted.
Follow the procedure described below:
Caution - Close the gas tap;
- Switch off the all-pole switch;
- Remove the main fuse.
• Remove the ignition cap.
• Remove the sealing surrounding the ignition pen.
• Unscrew the 4 screws of the cover plates around the
gas tube and ignition pen (see fig. 1).
• Remove the cover plates.
• Unscrew the swivel of the gas tube under the ignition pen.
• Unscrew the swivel of the gas tube on the gas control
valve.
!Caution Make sure the thread reducing bushes on the
gas control valve do not rotate as well.
• Remove the gas tube from the appliance.
• Remove the injector holder.
• Replace the injector by the propane injector.
• Reassemble everything in opposite order.
• Adjust the burner pressure for propane, using the
measuring nipple and the adjusting screw; see fig. 2.
Appendix 2 / Table 2 contains the required gas pressure
for the various versions of the appliance.
OPERATING INSTRUCTIONS
2
!
!
Fig. 1
!
Fig. 2
Burner pressure
Supply pressure
coverscrew/
adjusting screw

English
!Caution When checking/adjusting the burner
pressure, the appliance should be in operation
for at least 10 min.
!Tip The adjusting screw is located behind the
cover screw.
4.1 Add G31 type plate
Paste the G31 type plate over the G20 type plate, which
is located on the bottom front plate of the casing
(see figure 3).
5. Final check
In order to check whether the appliance is working
properly and safely, you must perform the following
checks before the appliance is used.
5.1. Gastightness
Caution All connections must be gastight.
!Caution The gas control valve can be subjected to a
maximum pressure of 50 mbar.
• Check the connections for gastightness.
• Make the connections gastight, if necessary.
5.2. Gas pressure / supply-pressure
The supply-pressure in house installations should be
checked, as they can vary.
Caution -After conversion to propane, the burner
pressure must be checked and adjusted,
if necessary;
- After maintenance work the burner
pressure must be checked, irrespective
of whether you are using natural gas or
propane, and adjusted if necessary.
Proceed as follows; see fig. 2:
• Check the supply-pressure.
• Contact the gas company if the supply-pressure is not
correct.
!Caution When checking/adjusting the burner
pressure, the appliance should be in operation
for at least 10 min.
• Adjust the burner pressure, if necessary.
!Tip The adjusting screw is located behind the
cover screw.
Kamara
OPERATING INSTRUCTIONS
3
Fig. 3
!
!

Appendix 1
Table 1: Relations between restriction, discharge system construction and type of gas
Type Type of gas Number of tube length Restriction Remarks
90º bends (meter) (mm)
7kW G20/G31 0 0 22,5 Direct connection to wall-terminal
0 1-10 22,5
1 1-10 22,5 Restriction is a fixed part
2 1-10 22,5 of venturi tube
3 1-6 22,5
4 1-2 22,5
12kW G20 0 0 36 Direct connection to wall-terminal
0 1-10 none
1 1-10 none
2 1-10 none
3 1-6 none
4 1-2 none
G31 0 0 45 Direct connection to wall-terminal
0 1-10 none
1 1-10 none
2 1-10 none
3 1-6 none
4 1-2 none
16kW G20/G31 0 0 45 Direct connection to wall-terminal
0 1-3 none
1 1-3 none
4
APPENDIX 1

English
5
Technical data
In the following table you can find the technical data for propane.
Table 2:Technical data
Type K7 K12 K16
Type of gas G20 G31 G20 G31 G2 G31
Burner pressure mbar 13.4 26 17.9 28.9 18.7 29
Nom. load (Hs) kW 8.4 8.3 14.3 13.9 19.6 18.8
Nom. load (Hi) kW 7.6 7.6 12.9 12.8 17.6 17.4
Nom. output kW 7 7 12 11.8 16 15.7
Consumption L/h 785 305 1360 517 1875 704
Burner injector mm 2.25 1.55 2.7 1.9 3.15 2.25
Efficiency class 1 1 1 1 1 1
APPENDIX 2
Kamara